What is EasyMock expect?

What is EasyMock expect?

EasyMock instantiates an object based on an interface or class. The expect() method tells EasyMock to simulate a method with certain arguments. The andReturn() method defines the return value of this method for the specified method parameters. The times() method defines how often the Mock object will be called.

How do you make a simple mock?

Example

1. Step 1: Create an interface called CalculatorService to provide mathematical functions.
2. Step 2: Create a JAVA class to represent MathApplication.
3. Step 3: Test the MathApplication class.
4. Step 4: Execute test cases.
5. Step 5: Verify the Result.

What is a nice mock?

A default mock expects only recorded calls but in any order. NICE. A nice mock expects recorded calls in any order and returning null for other calls. STRICT. A strict mock expects only recorded calls and they should be replayed in their recorded order.

How do you mock a method on EasyMock?

It uses the basic EasyMock concepts of expect, replay and verify.

1. Create mock instances for the objects you need to mock the method calls on, in this case the service and the stuffGetter .
2. Write expectations for the method calls using the expect method.
3. Replay the mock objects, in this case replay both of them.

What does EasyMock Reset do?

Resets the given mock object (more exactly: the control of the mock object). For details, see the EasyMock documentation.

How do you expect a void method to call in EasyMock?

When we use expectLastCall() and andAnswer() to mock void methods, we can use getCurrentArguments() to get the arguments passed to the method and perform some action on it. Finally, we have to return null since we are mocking a void method.

How do you mock a final class with EasyMock?

It’s impossible to mock a final class with pure EasyMock. You’ll have to add in something like PowerMock, which integrates well with EasyMock. Or you write a test that doesn’t require mocking of a final class.

How do you call private method on EasyMock?

Sometimes we want to test a method that is using a private method. We can create the mock object using EasyMock but EasyMock doesn’t allow us to mock private methods. So we can use PowerMock EasyMock API extension to mock a class private methods.

How do you throw an exception in EasyMock?

How do you test a void on EasyMock?

Basically the flow that I tend to use is:

1. Create a mock.
2. call expect(mock. [method call]).
3. call mock. [method call] , then EasyMock.
4. call replay(mock) to switch from “record” mode to “playback” mode.
5. inject the mock as needed.
6. call the test method.
7. call verify(mock) to assure that all expected calls happened.

What is the difference between EasyMock and Mockito?

Mockito is an open-source, Java-based mocking framework used in unit testing. EasyMock is an open-source, Java-based testing framework used for testing Java applications. The EasyMock framework is released under the Apache License. It allows the creation of mock objects of a given interface by using Java Reflection.

How to get a mock object from EasyMock?

For many tests using EasyMock, we only need a static import of methods of org.easymock.EasyMock. To get a Mock Object, we need to Here is a first example: After activation in step 3, mock is a Mock Object for the Collaborator interface that expects no calls.

What to expect with expect ( ) In EasyMock?

With expect (…), EasyMock is expecting the method to return a value or throw an Exception. EasyMock will complain about this, as it requires a call on expect (…).andReturn (…) if the method returns anything. If it’s a void method, we can expect its action using expectLastCall () like this: 5.2. Replay Order

What are the optional annotations in easy mock?

The annotation has an optional element, ‘type’, to refine the mock as a ‘nice’ mock or a ‘strict’ mock. Another optional annotation, ‘name’, allows setting of a name for the mock that will be used in the mock () call, which will appear in expectation failure messages for example.

When to use a FIELDNAME qualifier In EasyMock?

The fieldName qualifier can be used in this scenario to disambiguate the assignments. EasyMockSupport is a class that exist to help you keeping track of your mock. Your test cases should extend or delegate to it. It will automatically registers all created mocks and replay, reset or verify them in batch instead of explicitly.